Am i loosing my mind? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

abadsvt · 05-01-2008, 06:28 AM

Hi guys! I was centering my rear end on my frame and after i got it centered i noticed that the pinion center is slightly off centered. It is a little more on the passenger side. It is right around 3/8" give or take towards that side. I measured and measured and measured some more and the rear end is centered but the pinion isn't. Am i loosing my mind and start seeing things? Thanks Josh

**Hart_Rod** · 05-01-2008, 07:10 AM

I've never paid much attention to it, but that's probably right. Have you seen the offset of some the ford 9" rearends? Some of those are 6-10" offset.

R

Shaffer4 · 05-01-2008, 07:19 AM

Nevermind, after re-reading your post, I see what you are talking about :P

BigSky71 · 05-01-2008, 10:05 AM

Quote:

Originally Posted by Hart_Rod

I've never paid much attention to it, but that's probably right. Have you seen the offset of some the ford 9" rearends? Some of those are 6-10" offset.

R

Yea, my 9" is 3.75" to the passenger side. The local experts say no biggie as long as the pinion angle is kosher.

sneakysnake · 05-01-2008, 04:20 PM

Its to keep the needle bearings moving around. If the driveshaft was perfectly straight the needles in the Ujoints would cut gooves from being in the same spot.

**steelhorse** · 05-01-2008, 05:09 PM

abadsvt · 05-01-2008, 06:03 PM

Thanks guys! That was exactly what i was looking for. That makes sence with them being slightly off set for the needle bearings. I just wish every thing was lined up straight for cosmetic reasons because now the driveshaft won't be perfectly centered in my tranny tunnel. I know that sounds stupid but I am kind of anal like that. Everything needs to be perfect or i go crazy.

. So for a 9" rear end the pinion center is 3.75" off towards one side from center of the rear end? Thats crazy. If i am tripping out because on 3/8" or so can you imagine how crazy i would be if it was almost 4" off.

Thanks for the help

Josh

**Hart_Rod** · 05-01-2008, 06:09 PM

Quote:

Originally Posted by abadsvt

Thanks guys! That was exactly what i was looking for. That makes sence with them being slightly off set for the needle bearings. I just wish every thing was lined up straight for cosmetic reasons because now the driveshaft won't be perfectly centered in my tranny tunnel. I know that sounds stupid but I am kind of anal like that. Everything needs to be perfect or i go crazy.

. So for a 9" rear end the pinion center is 3.75" off towards one side from center of the rear end? Thats crazy. If i am tripping out because on 3/8" or so can you imagine how crazy i would be if it was almost 4" off.

Thanks for the help

Josh

You could always move the motor over to the same side the rearend is offset.....

.

BigSky71 · 05-01-2008, 06:24 PM

Quote:

Originally Posted by abadsvt

So for a 9" rear end the pinion center is 3.75" off towards one side from center of the rear end? Thats crazy. If i am tripping out because on 3/8" or so can you imagine how crazy i would be if it was almost 4" off.

Thanks for the help

Josh

Well my 9" is from an early Bronco, car models are different. I don't mind the offset, no one but the alignment guy has seen the bottom of my truck

.

grady5 · 05-02-2008, 03:23 AM

maybe you should ask luckin fou, on musclecar the challenger motor was offset in the engine bay and they centered it. he told what they did for the offset but i cant remember i think they tilted the axle down but im not sure

05-01-2008, 06:28 AM	#1
abadsvt Senior Member Join Date: Aug 2006 Location: Atascadero, CA Posts: 1,152	Am i loosing my mind? Hi guys! I was centering my rear end on my frame and after i got it centered i noticed that the pinion center is slightly off centered. It is a little more on the passenger side. It is right around 3/8" give or take towards that side. I measured and measured and measured some more and the rear end is centered but the pinion isn't. Am i loosing my mind and start seeing things? Thanks Josh __________________ (Project truck) 1970 C10 under complete transformation My current build thread http://67-72chevytrucks.com/vboard/s...d.php?t=212871 Other project: C5 corvette swap into 70 c10 http://67-72chevytrucks.com/vboard/s...=1#post2413517 On Hold

05-01-2008, 07:10 AM	#2
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,858	Re: Am i loosing my mind? I've never paid much attention to it, but that's probably right. Have you seen the offset of some the ford 9" rearends? Some of those are 6-10" offset. R __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3

05-01-2008, 07:19 AM	#3
Shaffer4 Strange Cousin From The West.. Join Date: Jul 2007 Location: Walla Walla, Wa Posts: 248	Re: Am i loosing my mind? Nevermind, after re-reading your post, I see what you are talking about :P Last edited by Shaffer4; 05-01-2008 at 07:25 AM.

05-01-2008, 04:20 PM	#5
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: Am i loosing my mind? Its to keep the needle bearings moving around. If the driveshaft was perfectly straight the needles in the Ujoints would cut gooves from being in the same spot.

05-01-2008, 05:09 PM	#6
steelhorse Senior Member Join Date: Apr 2008 Location: Franklinton NC Posts: 1,309	Re: Am i loosing my mind?

05-01-2008, 06:03 PM	#7
abadsvt Senior Member Join Date: Aug 2006 Location: Atascadero, CA Posts: 1,152	Re: Am i loosing my mind? Thanks guys! That was exactly what i was looking for. That makes sence with them being slightly off set for the needle bearings. I just wish every thing was lined up straight for cosmetic reasons because now the driveshaft won't be perfectly centered in my tranny tunnel. I know that sounds stupid but I am kind of anal like that. Everything needs to be perfect or i go crazy.. So for a 9" rear end the pinion center is 3.75" off towards one side from center of the rear end? Thats crazy. If i am tripping out because on 3/8" or so can you imagine how crazy i would be if it was almost 4" off. Thanks for the help Josh __________________ (Project truck) 1970 C10 under complete transformation My current build thread http://67-72chevytrucks.com/vboard/s...d.php?t=212871 Other project: C5 corvette swap into 70 c10 http://67-72chevytrucks.com/vboard/s...=1#post2413517 On Hold

05-02-2008, 03:23 AM	#10
grady5 Registered User Join Date: May 2007 Location: north carolina Posts: 80	Re: Am i loosing my mind? maybe you should ask luckin fou, on musclecar the challenger motor was offset in the engine bay and they centered it. he told what they did for the offset but i cant remember i think they tilted the axle down but im not sure

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